We just got a message from a reader who received an email from AT&T canceling his iPhone 4 pre-order. The customer had placed his order yesterday and received a confirmation number in email. However, today he got an auto-generated email from AT&T claiming that they were "unable to verify" his information "or you have exceeded the number of lines of service that we allow customers to purchase online." A call to AT&T confirmed that they are doing this to other customers.

The email reads as follows:

Dear xxxxxxxxxx

Thank you for choosing AT&T.

Unfortunately, we were either unable to verify the information you provided or you have exceeded the number of lines of service that we allow customers to purchase online. As a result, your order has been canceled.

If you would like to purchase additional lines of service, please visit one of our AT&T retail locations and present your identification to our representatives. They will be happy to help you purchase new wireless devices, accessories, and service.